code: def test_get_day_of_month_error():
      # get_day_of_month is not directly exposed.
      # We test it via roll_qtrday.
      dt = datetime(2017, 11, 15)
      day_opt = "foo"
  
      with pytest.raises(ValueError, match=day_opt):
          # To hit the raising case we need month == dt.month and n > 0.
          roll_qtrday(dt, n=3, month=11, day_opt=day_opt, modby=12)
  
file_path: pandas/pandas/tests/tslibs/test_liboffsets.py
imports: from datetime import datetime
  import pytest
  from pandas._libs.tslibs.ccalendar import get_firstbday, get_lastbday
  import pandas._libs.tslibs.offsets
  from pandas._libs.tslibs.offsets import roll_qtrday
  from pandas import Timestamp
label_desc: Use image node_id 9 for calling a global function with example usage: test_get_day_of_month_error() without return types